<!doctype html>
<html lang="en">
	<head>
		<!--  meta tags -->
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
		<!-- Bootstrap CSS -->
		<link rel="stylesheet" href="css/bootstrap.css">
	</head>
	<body>
		<div class="mx-auto my-5 p-5 shadow" style="width: 800px;">
			<form class="form-inline">
				<label class="sr-only">文本框</label>
				<input type="text" class="form-control mx-2" placeholder="文本框">

				<label class="sr-only">密码框</label>
				<input type="password" class="form-control mx-2" placeholder="密码框">

				<div class="form-check">
					<input type="radio" class="form-check-input" />
					<label class="form-check-label">单选</label>
				</div>
			</form>
		</div>
	</body>
</html>
